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Note 11 - Stock Compensation Plans (Details Textual) - USD ($)

1 Months Ended

5 Months Ended

12 Months Ended

Feb. 29, 2024

Mar. 31, 2023

Aug. 30, 2000

Dec. 31, 2020

Dec. 31, 2023

Dec. 31, 2022

May 31, 2022

Aug. 31, 2020

Jun. 30, 2015

Dec. 31, 2013

Mar. 31, 2013

Aug. 31, 2000

Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total

$ 0

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)

0

0

The 2003 Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized

450,000

Sharebased Compensation Arrangement By Sharebased Payment Award Number Of Options Ungranted

197,500

2003 Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period

3 years

The 2015 Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized

750,000

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)

^[1],[2]

0

0

The Directors Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized

200,000

Sharebased Compensation Arrangement By Sharebased Payment Award Number Of Options Ungranted

60,000

Number Of Options Each Director Received At Each Annual Meeting

4,000

Options Vesting Percentage On First And Second Anniversary

50.00%

The Directors Plan [Member] | Director [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)

5,000

The 2011 Non-employee Director Stock Option Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized

200,000

Three Independent Members of the Board of Directors [Member]

Share-Based Compensation Arrangement, Stock to be Granted Per Recipient, Value

$ 50,000

The 2022 Stock Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized

750,000

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)

^[1],[3],[4]

0

0

Share-Based Payment Arrangement, Option [Member] | Minimum [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period

2 years

Share-Based Payment Arrangement, Option [Member] | Maximum [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period

3 years

Restricted Stock [Member] | Subsequent Event [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period

288,803

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grant Date Fair Value

$ 3,600,000

[1]	Indicates plans with stock options.
[2]	The 2015 Incentive Stock Plan (the “2015 Plan”) was approved by shareholders in June 2015, which authorizes the issuance of up to 750,000 options to purchase shares of common stock to employees and key consultants and advisors.
[3]	In May 2022, shareholders approved the 2022 Employee Stock Incentive Plan (the “2022 Plan”), which replaces the 2015 Plan and authorizes the issuance of 750,000 shares of common stock to employees. No shares have been granted under the plan as of December 31, 2023.
[4]	Indicates plans with stock grants.

X

- Definition

Number of options each director received at each annual meeting.

+ References

No definition available.

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X

- Definition

Options vesting percentage on first and second anniversary.

+ References

No definition available.

+ Details

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X

- Definition

Fair value of granted award under share-based payment arrangement. Excludes share and unit options.

+ References

No definition available.

+ Details

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X

- Definition

Sharebased compensation arrangement by sharebased payment award number of options ungranted.

+ References

No definition available.

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X

- Definition

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+ References

No definition available.

+ Details

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X

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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X

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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X

- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
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-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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X

- Definition

Gross number of share options (or share units) granted during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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X

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X

- Details

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X

- Details

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X

- Details

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